Yes, absolutely. In fact by creating a zone via the DNS Manager that uses your own name server(s) as the primary, you gain more than just one secondary server, you gain the benefit of our entire global network designed to significantly improve the performance of your DNS!
Of course, you’re not limited to slaving DNS from your own DNS servers. We can mirror from most major DNS registrars or hosting providers too. Godaddy, NameCheap, Register.com are just a few that we support. So whatever your purpose, whether it be to increase redundancy or to keep using a control panel or process that you’re already familiar with, there is a 99.99% chance we’ll be able to support it for you.